700r4 shifts fine when manual 1 ta 2 but when in drive or overdrive it will down shift and then the rpms will pull but then the tach revs like it jumps into neutral but its not then if i let off the gas then hit it again it works i have pulled my tv cable to correct it but then i worsens after a while then ill pull it out further and so on even sometimes in OD if i hit a certain rpm and speed at the same time the car will kinnda shake, i think its from the tv cable is messed up

is it my clutches goin bad and they just cant hold anymore if so how much is it to get them replaced will stronger ones and probably a new tv cable

please give info and opinions